(SSE) INTel Corporation' s floating poiNTSIMD exteNTion of their PeNTiummicroprocessor architecture. SSE was formerly know as KNI (Katmai New Instructions). It was iNTroduced with the PeNTium III. {INTel PeNTium III (http://developer.iNTel.com/design/peNTiumiii/prodbref/)}. ipoem . (2003-07-13)